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My TV is advertised as 1080p and only does 1320x768. As long as it's above 720p they can claim 1080p. It seems that your actual question is whether it's the TV or your computer/connection. It's your TV, the resolution you're getting is its maximum resolution. The maximum resolution HDMI can do is generally 1080p (1920x1080).

This is technically not true, since HDMI can do pretty much any resolution DVI can do, but since it's a multimedia interface 1080p is likely the highest resolution a display you can connect via HDMI will give you (for now, at least).
 
That doesn't make a lot of sense to me as the display is clearly advertised at 1900x1080. I'm really wondering if my MacBook can only drive 1600x900 or if the adaptor cable is the limiting factor...

Does anyone know what the max resolution of the mini display port on a late 2009/early 2010 macbook is ? How might i find out otherwise ?

Thanks !
 
oh man... I just figured it out. In System Preferences, Display Preferences, 1600x900 is the last resolution listed. If you scroll to the top, you can find 1080p ... brilliant! Seems counter-intuitive but there I go. Case closed.
 
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